Rod knock or Main bearing knock?

[yaris2010RS]

Originally Posted by jabranko

Yes it's only when the car is completely warm and the idle is between 500-700. there are 53,000 miles on it and the tranny fluid i dont believe has ever been flushed from the maintenance records i have. i just bought the car two months ago. i got an oil change and fuel injection treatment done at the dealership 2 weeks after i bought it and that's all ive done. Should I have the tranny fluid flushed?

i dont know what the maintenance milage is for tranny fluid but 53,000 i think is early. u could get it done and it will probably make the sound less or gone for a while but that is probably not the issue.

check ur engine mounts and see how much the engine moves at idle and when shifting from drive to reverse. also check the air box (mine came loose and was making a scary sound) and check hoses for contact points (probably against the firewall) and check exhaust bushings